Generate a Minecraft 1.20.1 structure and export as a .schem...

Generate a Minecraft 1.20.1 structure and export as a .schem (Sponge Schematic 2.0). Create a cylindrical jungle dungeon 128 blocks deep, radius 32. Interior: a spiral descent path along the inner wall. Bottom: half flooded (water), half raised stone/mossy platform. Place ruined castle walls/towers, small stone ruins, grass, vines, azalea and jungle trees, moss and cracked blocks along the spiral. Use only 1.20.1 block palette. Ensure walkable spiral, no unintended floating blocks.